﻿// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

#nullable disable

using System.Drawing;

namespace System.Windows.Forms.Tests;

// NB: doesn't require thread affinity
public class DrawListViewColumnHeaderEventArgsTests
{
    public static IEnumerable<object[]> Ctor_Graphics_Rectangle_Int_ColumnHeader_ListViewItemStates_Color_Color_Font_TestData()
    {
        yield return new object[] { Rectangle.Empty, -2, null, (DrawItemState)(ListViewItemStates.Checked - 1), Color.Empty, Color.Empty, null };
        yield return new object[] { new Rectangle(1, 2, 3, 4), -1, new ColumnHeader(), ListViewItemStates.Checked, Color.Red, Color.Blue, SystemFonts.DefaultFont };
        yield return new object[] { new Rectangle(-1, 2, -3, -4), 0, new ColumnHeader(), ListViewItemStates.Checked, Color.Red, Color.Blue, SystemFonts.DefaultFont };
        yield return new object[] { new Rectangle(1, 2, 3, 4), 1, new ColumnHeader(), ListViewItemStates.Checked, Color.Red, Color.Blue, SystemFonts.DefaultFont };
    }

    [Theory]
    [MemberData(nameof(Ctor_Graphics_Rectangle_Int_ColumnHeader_ListViewItemStates_Color_Color_Font_TestData))]
    public void DrawListViewColumnHeaderEventArgs_Ctor_Graphics_Rectangle_Int_ColumnHeader_ListViewItemStates_Color_Color_Font(Rectangle bounds, int columnIndex, ColumnHeader header, ListViewItemStates state, Color foreColor, Color backColor, Font font)
    {
        using Bitmap image = new(10, 10);
        using Graphics graphics = Graphics.FromImage(image);
        DrawListViewColumnHeaderEventArgs e = new(graphics, bounds, columnIndex, header, state, foreColor, backColor, font);
        Assert.Same(graphics, e.Graphics);
        Assert.Equal(bounds, e.Bounds);
        Assert.Equal(columnIndex, e.ColumnIndex);
        Assert.Same(header, e.Header);
        Assert.Equal(state, e.State);
        Assert.Equal(foreColor, e.ForeColor);
        Assert.Equal(backColor, e.BackColor);
        Assert.Equal(font, e.Font);
        Assert.False(e.DrawDefault);
    }

    [Fact]
    public void DrawListViewColumnHeaderEventArgs_Ctor_NullGraphics_ThrowsArgumentNullException()
    {
        Assert.Throws<ArgumentNullException>("graphics", () => new DrawListViewColumnHeaderEventArgs(null, new Rectangle(1, 2, 3, 4), 0, new ColumnHeader(), ListViewItemStates.Default, Color.Red, Color.Blue, SystemFonts.DefaultFont));
    }

    [Theory]
    [BoolData]
    public void DrawListViewColumnHeaderEventArgs_DrawDefault_Set_GetReturnsExpected(bool value)
    {
        using Bitmap image = new(10, 10);
        using Graphics graphics = Graphics.FromImage(image);
        DrawListViewColumnHeaderEventArgs e = new(graphics, new Rectangle(1, 2, 3, 4), -1, new ColumnHeader(), ListViewItemStates.Checked, Color.Red, Color.Blue, SystemFonts.DefaultFont)
        {
            DrawDefault = value
        };
        Assert.Equal(value, e.DrawDefault);

        // Set same.
        e.DrawDefault = value;
        Assert.Equal(value, e.DrawDefault);

        // Set different.
        e.DrawDefault = !value;
        Assert.Equal(!value, e.DrawDefault);
    }

    public static IEnumerable<object[]> Draw_TestData()
    {
        yield return new object[] { new Rectangle(1, 2, 3, 4), new ColumnHeader(), ListViewItemStates.Default, Color.Red, Color.Blue, SystemFonts.DefaultFont };
        yield return new object[] { new Rectangle(1, 2, 3, 4), new ColumnHeader(), ListViewItemStates.Default, Color.Red, Color.Blue, SystemFonts.DefaultFont };
        yield return new object[] { new Rectangle(1, 2, 3, 4), new ColumnHeader(), ListViewItemStates.Default, Color.Red, Color.Blue, SystemFonts.DefaultFont };
    }

    [Theory]
    [MemberData(nameof(Draw_TestData))]
    public void DrawListViewColumnHeaderEventArgs_DrawBackground_Invoke_Success(Rectangle bounds, ColumnHeader header, ListViewItemStates state, Color foreColor, Color backColor, Font font)
    {
        using Bitmap image = new(10, 10);
        using Graphics graphics = Graphics.FromImage(image);
        DrawListViewColumnHeaderEventArgs e = new(graphics, bounds, -1, header, state, foreColor, backColor, font);
        e.DrawBackground();
    }

    [Theory]
    [InlineData(HorizontalAlignment.Left)]
    [InlineData(HorizontalAlignment.Center)]
    [InlineData(HorizontalAlignment.Right)]
    public void DrawListViewColumnHeaderEventArgs_DrawText_Invoke_Success(HorizontalAlignment textAlign)
    {
        using Bitmap image = new(10, 10);
        using Graphics graphics = Graphics.FromImage(image);
        ColumnHeader header = new() { TextAlign = textAlign };
        DrawListViewColumnHeaderEventArgs e = new(graphics, new Rectangle(1, 2, 3, 4), -1, header, ListViewItemStates.Checked, Color.Red, Color.Blue, SystemFonts.DefaultFont);
        e.DrawText();
    }

    [Fact]
    public void DrawListViewColumnHeaderEventArgs_DrawText_InvokeTextFormatFlags_Success()
    {
        using Bitmap image = new(10, 10);
        using Graphics graphics = Graphics.FromImage(image);
        DrawListViewColumnHeaderEventArgs e = new(graphics, new Rectangle(1, 2, 3, 4), -1, new ColumnHeader(), ListViewItemStates.Checked, Color.Red, Color.Blue, SystemFonts.DefaultFont);
        e.DrawText(TextFormatFlags.Bottom);
    }

    public static IEnumerable<object[]> NullHeader_TestData()
    {
        yield return new object[] { new Rectangle(-1, -2, -3, -4), 0, ListViewItemStates.Default, Color.Empty, Color.Empty, null };
        yield return new object[] { new Rectangle(1, 2, 3, 4), -1, ListViewItemStates.Checked, Color.Red, Color.Blue, SystemFonts.DefaultFont };
    }

    [Theory]
    [MemberData(nameof(NullHeader_TestData))]
    public void DrawListViewColumnHeaderEventArgs_DrawText_NullHeader_Success(Rectangle bounds, int columnIndex, ListViewItemStates state, Color foreColor, Color backColor, Font font)
    {
        using Bitmap image = new(10, 10);
        using Graphics graphics = Graphics.FromImage(image);
        DrawListViewColumnHeaderEventArgs e = new(graphics, bounds, columnIndex, null, state, foreColor, backColor, font);
        e.DrawText();
        e.DrawText(TextFormatFlags.Left);
    }
}
